if(fTrackType==5) {
//use TPConly constrained track
track = AliESDtrackCuts::GetTPCOnlyTrack(fESD,esdtrack->GetID());
if(fTrackType==5) {
//use TPConly constrained track
track = AliESDtrackCuts::GetTPCOnlyTrack(fESD,esdtrack->GetID());
AliExternalTrackParam exParam;
Bool_t relate = track->RelateToVertexTPC(fVtx,fESD->GetMagneticField(),kVeryBig,&exParam);
if( !relate ) {
AliExternalTrackParam exParam;
Bool_t relate = track->RelateToVertexTPC(fVtx,fESD->GetMagneticField(),kVeryBig,&exParam);
if( !relate ) {